Solar energy systems on walls existing on April 30, 2012,
projecting no more than 10 inches and occupying no more than
20 percent of the surface area of the #building# wall (as
viewed in elevation) from which it projects.

No #accessory# off-street parking facilities shall be permitted
in #designated open space#. No #building or other structure#
shall be erected in #designated open space# except as permitted
by the provisions of Section 107-221 (Active recreational
activities). Any existing #building or other structure# located
within the #designated open space# on September 11, 1975, and not
complying with the provisions of this Section or the other
Sections specified in the preceding paragraph, shall not be
#enlarged# but may be continued as a #non-conforming use# or
#non-complying building# subject to the applicable provisions of
Article V (Non-Conforming Uses and Non-Complying Buildings) in
accordance with the underlying district regulations.